Geodes are hollow rock formations often with quartz crystals ... More information: Fiorella Arduin-Rode et al, World-class amethyst-agate geodes from Los Catalanes, Northern Uruguay: genetic ...

The wonder of Radium, a glowing treasure discovered by Marie Curie, blinded the world to its perils... and it quickly became ...

A tradition that has dazzled visitors and rock enthusiasts for over 70 years ... everything from handcrafted silver jewelry to polished agate slices. These informal events add to the charm ...

Rockhounding is the recreational study and collection of rocks, gems, minerals or fossils, such as fossilized remains of terrestrial vegetation known as petrified wood or geodes ... Find jasper, moqui ...

Agates are semi-precious gemstones found in a variety of rock formations, primarily volcanic rocks and certain metamorphic rocks. They are a type of chalcedony, made up of layers of quartz, which may ...

A cave with numerous rocks and water, illuminated by rays of light penetrating the stone walls. closeup of red mineral crystal formation This closeup video shows a beautiful and glistening red mineral ...

Percentages: FG .339, FT .727.

Plus, there’s the new ‘geode cracker’, the only one of its kind in the country! Geodes are spherical rocks – some up to 44 million years old – that contain hollow cavities lined with beautiful ...

Radium was seen as a miracle product, and even used in lipsticks: only later was it realised that it was highly dangerous - Illustration by Ricardo Rey ...